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Fittoniya [83]
3 years ago
14

A rhombus with four right angles

Mathematics
1 answer:
lara [203]3 years ago
4 0

Answer: A rhombus with 4 right angles make a square

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How do you work this out?
Katarina [22]
Because ABCD is a rectangle, the length of CD is 12 cm.

We need to determine the length of DE.  If we can do that, then the sum of the lengths of CD and DE represents the unknown:  the length of CE.

To find the length of CE, we have to "solve" the upper triangle.

Here's an outline of what to do:

1.  Show that BC=AD and find the length.
2.  Note that angle CAD is 60 degrees.  Why?
3.  Note that angle EAD is 30 degrees.  Why?
4.  Find the length of ED
5.  Add ED and DC, that is, ED + 12 cm.  This is your answer.

Please ask questions if need be.
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2 years ago
Need help with 9 (a and b) plzzzz
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A) is 0.83 and idk how to do b)
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Write 6.2 as a improper fraction ​
Ad libitum [116K]

Answer: 31/5

Step-by-step explanation:

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Answer:

-2

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because the slope is 2, a perpendicular line must be the inverse  

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3 years ago
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A 12 foot by 8 foot rug covers the hardwood floor of a room. The rug leaves a uniform
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Answer: 2(12 × 8)

Step-by-step explanation:

The area of the rug will be gotten by multiplying the length by its width. This will be:

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3 years ago
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